// Use of this source code is governed by a MIT license that can be found in the LICENSE file.
// sms10086@hotmail.com

/*
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

package goffmpeg6

//#cgo pkg-config: libavutil
//#include <stddef.h>
//#include "libavutil/cpu.h"
import "C"
import (
    "unsafe"
)

const AV_CPU_FLAG_FORCE =     0x80000000  
const AV_CPU_FLAG_MMX =           0x0001  
const AV_CPU_FLAG_MMXEXT =        0x0002  
const AV_CPU_FLAG_MMX2 =          0x0002  
const AV_CPU_FLAG_3DNOW =         0x0004  
const AV_CPU_FLAG_SSE =           0x0008  
const AV_CPU_FLAG_SSE2 =          0x0010  
const AV_CPU_FLAG_SSE2SLOW =  0x40000000  
const AV_CPU_FLAG_3DNOWEXT =      0x0020  
const AV_CPU_FLAG_SSE3 =          0x0040  
const AV_CPU_FLAG_SSE3SLOW =  0x20000000  
const AV_CPU_FLAG_SSSE3 =         0x0080  
const AV_CPU_FLAG_SSSE3SLOW =  0x4000000  
const AV_CPU_FLAG_ATOM =      0x10000000  
const AV_CPU_FLAG_SSE4 =          0x0100  
const AV_CPU_FLAG_SSE42 =         0x0200  
const AV_CPU_FLAG_AESNI =        0x80000  
const AV_CPU_FLAG_AVX =           0x4000  
const AV_CPU_FLAG_AVXSLOW =    0x8000000  
const AV_CPU_FLAG_XOP =           0x0400  
const AV_CPU_FLAG_FMA4 =          0x0800  
const AV_CPU_FLAG_CMOV =          0x1000  
const AV_CPU_FLAG_AVX2 =          0x8000  
const AV_CPU_FLAG_FMA3 =         0x10000  
const AV_CPU_FLAG_BMI1 =         0x20000  
const AV_CPU_FLAG_BMI2 =         0x40000  
const AV_CPU_FLAG_AVX512 =      0x100000  
const AV_CPU_FLAG_AVX512ICL =   0x200000  
const AV_CPU_FLAG_SLOW_GATHER =   0x2000000  
const AV_CPU_FLAG_ALTIVEC =       0x0001  
const AV_CPU_FLAG_VSX =           0x0002  
const AV_CPU_FLAG_POWER8 =        0x0004  
const AV_CPU_FLAG_ARMV5TE =       (1 << 0) 
const AV_CPU_FLAG_ARMV6 =         (1 << 1) 
const AV_CPU_FLAG_ARMV6T2 =       (1 << 2) 
const AV_CPU_FLAG_VFP =           (1 << 3) 
const AV_CPU_FLAG_VFPV3 =         (1 << 4) 
const AV_CPU_FLAG_NEON =          (1 << 5) 
const AV_CPU_FLAG_ARMV8 =         (1 << 6) 
const AV_CPU_FLAG_VFP_VM =        (1 << 7)  
const AV_CPU_FLAG_DOTPROD =       (1 << 8) 
const AV_CPU_FLAG_I8MM =          (1 << 9) 
const AV_CPU_FLAG_SETEND =        (1 <<16) 
const AV_CPU_FLAG_MMI =           (1 << 0) 
const AV_CPU_FLAG_MSA =           (1 << 1) 
const AV_CPU_FLAG_LSX =           (1 << 0) 
const AV_CPU_FLAG_LASX =          (1 << 1) 
const AV_CPU_FLAG_RVI =           (1 << 0)  
const AV_CPU_FLAG_RVF =           (1 << 1)  
const AV_CPU_FLAG_RVD =           (1 << 2)  
const AV_CPU_FLAG_RVV_I32 =       (1 << 3)  
const AV_CPU_FLAG_RVV_F32 =       (1 << 4)  
const AV_CPU_FLAG_RVV_I64 =       (1 << 5)  
const AV_CPU_FLAG_RVV_F64 =       (1 << 6)  
const AV_CPU_FLAG_RVB_BASIC =     (1 << 7)  
const AV_CPU_FLAG_RVB_ADDR =      (1 << 8)  


                    
                    

                   

/* force usage of selected flags (OR) */

    /* lower 16 bits - CPU features */
///< standard MMX
///< SSE integer functions or AMD MMX ext
///< SSE integer functions or AMD MMX ext
///< AMD 3DNOW
///< SSE functions
///< PIV SSE2 functions
///< SSE2 supported, but usually not faster
                                        ///< than regular MMX/SSE (e.g. Core1)
///< AMD 3DNowExt
///< Prescott SSE3 functions
///< SSE3 supported, but usually not faster
                                        ///< than regular MMX/SSE (e.g. Core1)
///< Conroe SSSE3 functions
///< SSSE3 supported, but usually not faster
///< Atom processor, some SSSE3 instructions are slower
///< Penryn SSE4.1 functions
///< Nehalem SSE4.2 functions
///< Advanced Encryption Standard functions
///< AVX functions: requires OS support even if YMM registers aren't used
///< AVX supported, but slow when using YMM registers (e.g. Bulldozer)
///< Bulldozer XOP functions
///< Bulldozer FMA4 functions
///< supports cmov instruction
///< AVX2 functions: requires OS support even if YMM registers aren't used
///< Haswell FMA3 functions
///< Bit Manipulation Instruction Set 1
///< Bit Manipulation Instruction Set 2
///< AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used
///< F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ
///< CPU has slow gathers.

///< standard
///< ISA 2.06
///< ISA 2.07








///< VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations







//Loongarch SIMD extension.



// RISC-V extensions
///< I (full GPR bank)
///< F (single precision FP)
///< D (double precision FP)
///< Vectors of 8/16/32-bit int's */
///< Vectors of float's */
///< Vectors of 64-bit int's */
///< Vectors of double's
///< Basic bit-manipulations
///< Address bit-manipulations

/**
 * Return the flags which specify extensions supported by the CPU.
 * The returned value is affected by av_force_cpu_flags() if that was used
 * before. So av_get_cpu_flags() can easily be used in an application to
 * detect the enabled cpu flags.
 */
func Av_get_cpu_flags() int32 {
    return int32(C.av_get_cpu_flags())
}

/**
 * Disables cpu detection and forces the specified flags.
 * -1 is a special case that disables forcing of specific flags.
 */
func Av_force_cpu_flags(flags int32)  {
    C.av_force_cpu_flags(C.int(flags))
}

/**
 * Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
 *
 * @return negative on error.
 */
func Av_parse_cpu_caps(flags *uint32, s *byte) int32 {
    return int32(C.av_parse_cpu_caps((*C.unsigned)(unsafe.Pointer(flags)), 
        (*C.char)(unsafe.Pointer(s))))
}

/**
 * @return the number of logical CPU cores present.
 */
func Av_cpu_count() int32 {
    return int32(C.av_cpu_count())
}

/**
 * Overrides cpu count detection and forces the specified count.
 * Count < 1 disables forcing of specific count.
 */
func Av_cpu_force_count(count int32)  {
    C.av_cpu_force_count(C.int(count))
}

/**
 * Get the maximum data alignment that may be required by FFmpeg.
 *
 * Note that this is affected by the build configuration and the CPU flags mask,
 * so e.g. if the CPU supports AVX, but libavutil has been built with
 * --disable-avx or the AV_CPU_FLAG_AVX flag has been disabled through
 *  av_set_cpu_flags_mask(), then this function will behave as if AVX is not
 *  present.
 */
func Av_cpu_max_align() uint64 {
    return uint64(C.av_cpu_max_align())
}

                         
